slow import time

[ananis25]

Hi - importing fast_hdbscan seems to be really slow, using the latest PyPi version. It takes ~25s in a new python session.

Here is a repro in google colab.

Of course, numba compile times can be really slow sometimes, I just wanted to check if this is expected, or a possible regression due to a dependency?

[lmcinnes]

I believe it is simply all the numba compile times. You can try turning on numba compilation caching with environment variables and see if that helps any.

[ananis25]

Thanks for confirming. I couldn't find a global toggle in the Numba docs to instruct numba to cache everything. But I added cache=True to every jit decorator call, and that brings down import time from 25s to 8s in a new session.

Does it make sense to add caching by default?